[RESEARCH] YpsoPump driver — reverse engineering and integration assessment

[bcoster22]

Research: YpsoPump Driver for AndroidAPS

Overview

Exploring the feasibility of integrating a YpsoPump driver into AndroidAPS. Two community efforts exist (as of Feb 2026) that could serve as a foundation.

AAPS Codebase Already Has

• PumpType.YPSOPUMP with full dose settings (bolus 0.1U, basal 0.02-40 U/h, TBR 500%)
• ManufacturerType.Ypsomed
• PumpCapability.YpsomedCapabilities
• DoseStepSize.YpsopumpBasal

Community Efforts

Project	Type	AAPS Compatible?
SandraK82/ypsopump-research	AAPS driver scaffold	Yes — targets 3.4.1.0, extends PumpPluginBase, 1-line import fix needed
vicktor/ypsomed-pump	Standalone BLE SDK	No — needs wrapping in AAPS plugin module

The two projects are complementary: one provides the AAPS integration layer, the other provides the working pump communication.

Compatibility Assessment

SandraK82's driver follows AAPS 3.4.1.0 architecture:

• Correct module structure (pump/ypsopump/)
• Implements Pump interface, extends PumpPluginBase
• Uses PumpSync, CommandQueue, RxBus
• All core module dependencies match
• Status: Draft/scaffold — not tested on real pump hardware

Official Context

• YpsoPump works with mylife App and mylife CamAPS FX (closed-loop)
• Ypsomed partnered with JDRF for research trials (Baker Institute, CREATE trial)
• No public API or protocol documentation available

Next Steps

Detailed technical work (protocol analysis, driver development) tracked in a private repository due to the sensitive nature of the research.

References

• nightscout/AndroidAPS #4563 — Community discussion
• SandraK82/ypsopump-research — RE docs + driver skeleton
• mylife Loop — Official closed-loop system